Maybe it's just me, and maybe it's been mentioned elsewhere, but when I improve a stat somehow, I want to see the effect it has on my game. When I get a new weapon, or grab another 30 points of my main damage stat, I like seeing the increase in damage or healing I do. More vit let's me see a larger health pool, and joke with my friends about shrugging off mechanics that they get anxious about. Increasing my crit or direct hit rate gives me a visibly tangible result; I see big, pretty numbers with two !!'s more often.

What do I see with Tenacity? Nothing. As far as I can tell the stat is invisible for all the good it does. I'm not saying add an in-your-face way of knowing when Tenacity has positively affected you, but I am saying that it would be nice if the effect it had was noticeable. I want to be excited about gaining another 40 or 50 Tenacity, just like I am on my SAM when I get another piece of +40 Crit materia.